OMG get a wilson 1000 with the 66 inch whip and forget it!!!!!![]()
You'll do fine with the SWR meter. It'll be accurate enough for anything you do with CBs, and if you need to in the future, you can spend some money on a separate meter. I'd advising spending money on a meter for modulation and watts if you start getting into the hobby more.
Whereabouts in the world are you located anyways?
-Richard-